| 1999 IAAF World Indoor Championships | ||
|---|---|---|
 | ||
| Track events | ||
| 60 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | men | women |
| 1500 m | men | women |
| 3000 m | men | women |
| 60 m hurdles | men | women |
| 4 × 400 m relay | men | women |
| 3000 m walk | women | |
| 5000 m walk | men | |
| Field events | ||
| High jump | men | women |
| Pole vault | men | |
| Long jump | men | women |
| Triple jump | men | women |
| Shot put | men | women |
The women's 1500 metres event at the 1991 IAAF World Indoor Championships was held on 9 and 10 March.
| Gold | Silver | Bronze |
Lyudmila Rogachova  Soviet Union | Ivana Kubešová  Czechoslovakia | Tudorita Chidu  Romania |
First 4 of each heat (Q) and next 2 fastest (q) qualified for the semifinals. [1]
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 2 | Tudorita Chidu | Romania | 4:09.27 | Q |
| 2 | 2 | Alisa Hill |  United States | 4:09.45 | Q |
| 3 | 2 | Lyudmila Rogachova | Soviet Union | 4:09.48 | Q |
| 4 | 2 | Ellen Kiessling |  Germany | 4:10.23 | Q |
| 5 | 2 | Yvonne van der Kolk |  Netherlands | 4:10.40 | q |
| 6 | 1 | Doina Melinte | Romania | 4:11.74 | Q |
| 7 | 1 | Ivana Kubešová | Czechoslovakia | 4:11.95 | Q |
| 8 | 1 | Yvonne Mai | Germany | 4:12.04 | Q |
| 9 | 1 | Gina Procaccio | United States | 4:12.17 | Q |
| 10 | 1 | Jo White |  Great Britain | 4:12.39 | q |
| 11 | 2 | Jo Dering | Great Britain | 4:13.10 | |
| 12 | 1 | Veronique Pongerard |  France | 4:14.30 | NR |
| 13 | 2 | Leah Pells |  Canada | 4:20.00 | |
| 1 | Lyubov Kremlyova | Soviet Union | DNF | ||
| 2 | Rosalie Bagué Peng Gangué |  Chad | DNS |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
 | Lyudmila Rogachova | Soviet Union | 4:05.09 | |
 | Ivana Kubešová | Czechoslovakia | 4:06.22 | NR |
 | Tudorita Chidu | Romania | 4:06.27 | PB |
| 4 | Doina Melinte | Romania | 4:06.65 | |
| 5 | Yvonne van der Kolk | Netherlands | 4:06.86 | PB |
| 6 | Yvonne Mai | Germany | 4:07.30 | |
| 7 | Alisa Hill | United States | 4:08.54 | |
| 8 | Gina Procaccio | United States | 4:19.51 | |
| 9 | Jo White | Great Britain | 4:20.72 | |
| Ellen Kiessling | Germany | DNS |
Entropy is a scientific concept that is most commonly associated with a state of disorder, randomness, or uncertainty. The term and the concept are used in diverse fields, from classical thermodynamics, where it was first recognized, to the microscopic description of nature in statistical physics, and to the principles of information theory. It has found far-ranging applications in chemistry and physics, in biological systems and their relation to life, in cosmology, economics, sociology, weather science, climate change, and information systems including the transmission of information in telecommunication.
A heat engine is a system that converts heat to usable energy, particularly mechanical energy, which can then be used to do mechanical work. While originally conceived in the context of mechanical energy, the concept of the heat engine has been applied to various other kinds of energy, particularly electrical, since at least the late 19th century. The heat engine does this by bringing a working substance from a higher state temperature to a lower state temperature. A heat source generates thermal energy that brings the working substance to the higher temperature state. The working substance generates work in the working body of the engine while transferring heat to the colder sink until it reaches a lower temperature state. During this process some of the thermal energy is converted into work by exploiting the properties of the working substance. The working substance can be any system with a non-zero heat capacity, but it usually is a gas or liquid. During this process, some heat is normally lost to the surroundings and is not converted to work. Also, some energy is unusable because of friction and drag.
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World Indoor Champions in women's 1500 metres | |
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